Android - native sockets not removing 3G-sleep-mode on first attempt

I have a really annoying problem. What happens is I have an application which is using native sockets to send data over TCP. When I first launch my application and send data over the sockets, no开发者_如何学JAVAthing gets through. However if I then quit the process and restart it and then send again, it works. Same thing if I open the browser or something before starting my app for the first time after sleep mode.

How do I 'force' 3G to go out of sleep mode before I make the call to the native code?

EDIT: I have already tried with PowerManager.

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Try calling startUsingNetworkFeature (int networkType, String feature) On a ConnectivityManager and wait for it to be available before you bind your sockets ect......

Android Documentation

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I'd give the ConnectivityManager API requestRouteToHost(int networkType, int hostAddress) a try.